The Apology of Ben Domenech

I've used a line when I didn't own it;
I guess, friends and foes, that I've blown it.
I'd clean it with spittle,
And change just a little...
If this is mastery, then (sigh) I'm a donut.

Fish in a Barrel, by Ben Domenech

What is the line ‘bout the mote
In one’s eye? Can one gloat
And still be annoyed?
Ah, schadenfreude.
(Yo, Ben, here… Steal this quote).